Hello again! I've managed to make it past quite a lot. But I've made it to a portion I'm stumped on. Just a reminder. This sweater jacket is top down construction.

I've done the joining row of yarn, so the entire top is on the circ needle.

Directions:
Sleeve & neck Inc row.(RS)
K2, M1, (knit to m, sl m ( does that mean slip the marker off the needle or just slip it?) RL1, knit to m, LL1, sl m) 2 times.
This is expanding the sleeve portion.
There are only 3 markers for the sleeve. So I can't finish that last LL1 without heading into the back portion which cannot be correct.

I don't have the pattern but usually there are 4 markers total for a top down sweater: one between the front and the right sleeve, one between the sleeve and the back, one between the back and the left sleeve and finally one between the sleeve and the front. Are there really 3 or 4 markers for each sleeve on this sweater? Maybe you could quote the row where the markers are inserted and that would help us.
Don't slip the marker off the needle. Just slip it from the left needle to the right. You'll need it for the next increase row.